Kylie and Kendall Jenner's dad arrived at Heathrow airport in London on Thursday afternoon, just hours before a string of celebs were due to enter the CBB house sparking speculation she may well be on the show.

The identity of this series' housemates has been a closely guarded secret - could Caitlyn be their big surprise?

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The Olympian hasn't been to the UK since her transition in 2015 and strangely hasn't mentioned the reason for her trip across the pond on social media.

It's not a huge stretch to think that Caitlyn would be up for appearing on the show after appearing for years on Keeping Up With The Kardashians before landing her own E! series I Am Cait, she would find the constant presence of the cameras easier than most.